Summary of the invention
The object of the invention is to, for the problems referred to above, propose master-slave radio sensing node supervisory system for a kind of Cold Chain Logistics, to realize transportation reliability height and the good advantage of safety in utilization.
For achieving the above object, the technical solution used in the present invention is: master-slave radio sensing node supervisory system for a kind of Cold Chain Logistics, comprise on the transport vehicle that is installed on Cold Chain Logistics and the host node of powering by the vehicle power of transport vehicle, disperse to be arranged on transport vehicle a plurality of from node in each congealer, for monitoring described host node and a plurality of server from node, and for described host node and a plurality of between node and the wireless communication module that carries out information interaction between host node and server; Wherein:
Described host node, for detection of the environmental information of transport vehicle of living in, receives the information transmitting from node by wireless communication module, and detection gained transport vehicle environmental information and reception gained are sent to server from nodal information by wireless communication module;
Described from node, for detection of the environmental information of congealer of living in, and send detection gained congealer environmental information to host node by wireless communication module.
Further, the described number from node, is at least 128; Described host node and at least 128 form Star Network from node, and carry out networking and communication by meeting the agreement of ZigBee standard.
Further, described host node, comprise housing, be arranged on master node control, transport vehicle environmental information sensor, electric power system, real-time timepiece chip, host node wireless communication module and the storer of described enclosure interior, and the external interface that is arranged on described outside and is connected with enclosure interior relevant device;
Described transport vehicle environmental information sensor, electric power system, real-time timepiece chip, host node wireless communication module and storer, be connected with master node control respectively; Described electric power system, comprises the vehicle power supply module and the rechargeable battery supply module that are equipped with.
Further, described master node control, comprises host CPU that master-slave mode arranges and from CPU;
Described host CPU, is connected with storer with transport vehicle environmental information sensor, electric power system, real-time timepiece chip, host node wireless communication module respectively; Described from CPU, be connected with host node wireless communication module with described host CPU respectively.
Further, described host node wireless communication module, comprises the GPRS communication module, GPS communication module and the WIFI communication module that are connected with described host CPU respectively, and respectively with the described ZigBee communication module being connected from CPU.
Further, described external interface, comprises power interface, GPRS antennal interface, gps antenna interface, WIFI interface and ZigBee antennal interface;
Described power interface is connected with described electric power system, described GPRS antennal interface is connected with GPRS communication module, described gps antenna interface is connected with GPS communication module, and described WIFI interface is connected with WIFI communication module, and described ZigBee antennal interface is connected with ZigBee communication module.
Further, described transport vehicle environmental information sensor, comprises the temperature sensor, humidity sensor, acceleration transducer, the CO that are connected with described master node control, electric power system and host node wireless communication module respectively
2gas sensor and GPS sensor.
Further, described from node, comprise housing, and be arranged on described enclosure interior from node cpu, congealer environmental information sensor, powered battery module, real-time timepiece chip and ZigBee communication module, and the ZigBee antennal interface that is arranged on described outside and is connected with enclosure interior relevant device;
Described congealer environmental information sensor, powered battery module, real-time timepiece chip and ZigBee communication module, be connected respectively with from node cpu; Described ZigBee antennal interface, is connected with ZigBee communication module.
Further, described congealer environmental information sensor, comprises respectively with the described temperature sensor being connected with powered battery module from node cpu, humidity sensor, acceleration transducer and illegally opens sensor.
Further, the described sensor of illegally opening, comprises respectively and the described tongue tube being connected with powered battery module from node cpu, and with congealer in the magnet that is equipped with of corresponding package case; Described tongue tube is connected with magnet; And/or,
Described ZigBee antennal interface is input and output bi-directional configuration; ZigBee antenna with described ZigBee antennal interface matches, adopts PCB antenna.
Master-slave radio sensing node supervisory system for the Cold Chain Logistics of various embodiments of the present invention, owing to comprising on the transport vehicle that is installed on Cold Chain Logistics and the host node of powering by the vehicle power of transport vehicle, disperse to be arranged on transport vehicle a plurality of from node in each congealer, for monitoring host node and a plurality of server from node, and for host node and a plurality of between node and the wireless communication module that carries out information interaction between host node and server; Can utilize Zigbee-technology simultaneously in conjunction with master-slave radio sensor-based system, the real-time monitoring of realization to information such as article humitures in Cold Chain Logistics transportation and dispensing link process, when exceeding standard or meet with while illegally opening, humiture implements to report to the police, and can change transportation, humiture in delivery process, geography information carry out record, the function such as realize that cold chain article status monitoring and security alarm, cold chain article overall process information are reviewed; Thereby can overcome, in prior art, transport the low and poor defect of safety in utilization of reliability, to realize the high and good advantage of safety in utilization of transportation reliability.
Other features and advantages of the present invention will be set forth in the following description, and, partly from instructions, become apparent, or understand by implementing the present invention.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein, only for description and interpretation the present invention, is not intended to limit the present invention.
Cold Chain Logistics, general reference refrigerating based food producing, storage transportation, sell, in the links before final user all the time under the low temperature environment in regulation, to guarantee food quality, reduce a systematic engineering of business of food loss.Owing to there being the factors such as environmental impact, technical limitation, cost, the article temperature in transportation and delivery process is more much bigger than other links because unfavorable factor affects the article quality accident risk causing.For addressing these problems, need can continue to record article temperature variation and background management system is stored and sent to this temperature data.Therefore, for avoiding low temperature food product occurrence temperature ANOMALOUS VARIATIONS or illegally opened in transit, cause consumer, after edible, food-safety problem occurs, set up a set of monitoring system for Cold Chain Logistics and be necessary.
In order to meet intelligent FF logistics system application demand, according to the embodiment of the present invention, as Figure 1-Figure 4, provide master-slave radio sensing node supervisory system for a kind of Cold Chain Logistics.Master-slave radio sensing node supervisory system for this Cold Chain Logistics, can be used for the real-time management and control of whole logistics progress, food from origin outbound, in transit, the whole flow process that arrives destination warehouse-in manages and monitors, help enterprise to grasp in time freight transportation situation, reduce manually-operated error and hysteresis, use manpower and material resources sparingly, reduce food quality loss, strengthen the technical capability of Cold Chain Logistics, improved the efficiency of management, transparency and validity.
Master-slave radio sensing node supervisory system for the Cold Chain Logistics of the present embodiment, mainly comprises controller, and the sensor being connected with controller respectively, wireless transport module, power module and GPS locating module.
As primary and secondary structure, master-slave radio sensing node supervisory system for the Cold Chain Logistics of the present embodiment, generally comprise a host node and a plurality of from node, host node and a plurality of from node (being no less than 128) composition Star Network, and carry out networking and communication by meeting the agreement of ZigBee standard.Host node is installed on the transport vehicle of Cold Chain Logistics, by vehicle power, powers; A plurality ofly from node, disperse to be positioned in each congealer transport vehicle.Host node contains the sensors such as temperature, humidity, acceleration, CO2 gas, GPS, when detecting the sensor information of environment of living in, receives the information transmitting from node, and these information exchanges is crossed to GPRS or WIFI is sent to server wirelessly; From node, contain temperature, humidity, acceleration, illegally the sensor such as open, can detect the sensor information of environment of living in, and send these information to host node.Be described as follows:
(i) host node:
(1) outward appearance is generally rectangular parallelepiped, and size is generally 160*155*50mm; For ease of fixed installation, the interfaces such as power supply, antenna, pilot lamp, mounting hole etc. when structural design, have also been reserved.
(2) electric power system: the mode that the power supply of host node adopts vehicle power power supply and rechargeable battery to power and combine.Rechargeable battery rated capacity 450mAh, rated voltage 7.4V.Power management part converts the electric energy of the power supply of outside input or internal battery to the inner modules required power supply that works.When having external power source input, internal battery is charged, while there is no power supply input, use internal battery power supply.
(3) host node is used ARM Cortex M3 as host CPU (main control chip), is responsible for system management.The function of ARM Cortex M3 is: by serial ports of computers, to host node, send data, running parameter is set, comprising:
1. as telegon, carry out networking.
2. server ip address and port numbers are set, regularly to server, send test packet, test network connected state.
3. host node data upload mode is set: GPRS, Wi-Fi or ZigBee.
4. detect power supply, to determine that host node is operated in normal mode or low-power consumption mode.Under normal mode, continue to open GPRS, GPS; Under low-power consumption mode, regularly open GPRS, GPS.
Host node sensor type (sensor such as humiture, acceleration, carbon dioxide, GPS) is 5. set, according to setting, opens.
6. the transmission time interval of master and slave node sensor acquisition interval time and host node under normal mode and low-power consumption mode is set:
Under normal mode, the master and slave node sensor acquisition interval time is generally 1-60 minute, and the unit that goes forward one by one is 1 minute; Host node sends and is generally 1-120 minute interval time, and the unit that goes forward one by one is 1 minute.Under low-power consumption mode, the master and slave node sensor acquisition interval time is generally 10-60 minute, and the unit that goes forward one by one is 10 minutes; Host node sends and is generally 1 hour-6 hours interval time, and the unit that goes forward one by one is 1 hour.
7. according to the host node acquisition interval time, timing acquiring humiture, carbon dioxide, GPS sensing data; By the mode of interrupting, read acceleration transducer event, by serial ports, receive the sensing data from node.
If 8. information sends interval and is greater than acquisition interval, by the host node humiture of collection, carbon dioxide, GPS, acceleration and be temporarily stored in EEPROM from node sensing data, etc. transmitting time to uploading again; If information sends interval, equal acquisition interval, will upload onto the server in real time.
9. can receive and forward the parameters from node by serial ports, comprising bound of ZigBee working frequency range from node, packet numbering, sensor type, acquisition interval time, Temperature Humidity Sensor etc.
10. read the network state information of master and slave node, comprise from number of nodes etc.
(4) host node is used TI(Texas Instruments) CC2530 as from CPU, complete the communication of each several part module and control, and realize compatible ZigBee wireless communication protocol.
1. can realize the function in Zigbee protocol development requirement.
2. can by serial ports, send the working method of host node CC2530, the working frequency range (CH1-CH16) of host node CC2530 is set, by switching frequency range, anti-interference, assurance is stablized.
3. can receive in ZigBee-network the parameters from node, router by serial ports, and be transmitted to from node by ZigBee-network; Parameters comprises the bound of ZigBee working frequency range from node, packet numbering, sensor type (use humiture, illegally open, acceleration transducer wherein which sensor), acquisition interval time, Temperature Humidity Sensor.
4. when system needs, can upload network state information, comprise from number of nodes.
(5) host node is realized compatible GPRS wireless communication protocol.Utilize the GPRS/GSM wireless network of operator, for terminal device and data service center (platform) erect a wireless communication link, based on this wireless communication link, can carry out the transmission of data, realize the seamless access with cloud communications platform.
(6) host node contains GPS module, has following characteristics: the u-bolx engine of 50 passages, more than 100 ten thousand effective correlators; Warm start and assistant starting primary positioning time are less than 1 second; The SuperSense of-162dBm catches and tracking sensitivity; Possess KickStart function, when model is faint, can realize and accelerate to start; Support the A-GPS services such as AssistNow Online and AssistNow Offline; GPS, GALILEO, SBAS(WAAS, EGNOS, MSAS, GAGAN) mixing engine; 5Hz positioned update speed; Setting accuracy is 2.5MCEP; Have the compatible I2C of UART interface, USB V2.0 interface, DDC() interface, SPI interface.
(7) host node includes real-time timepiece chip, and real-time clock, except providing current time, can also produce timing pip, is used for waking up CPU.
(8) host node contains band EEPROM (Electrically Erasable Programmable Read Only Memo) (EEPROM) and stores the information from node, and the capacity of EEPROM is 256KB, uses I2C interface to communicate, and supports the write operation of 1,000,000 times, and data can keep 40 years.
(9) the external interface of host node comprises power interface, GPRS antennal interface, gps antenna interface and ZigBee antennal interface.
1. host node power interface: when host node adopts outside vehicle power power supply, vehicle power is connected with host node by power interface, and power interface is input interface, and input voltage range is direct current 9V ~ 20V.
2. host node GPRS antennal interface adopts SMA interface shape, is connected with external whip antenna, and interface direction is that input and output are two-way.
3. host node ZigBee antennal interface: the ZigBee antennal interface of host node adopts SMA interface shape, is connected with external whip antenna, and interface direction is that input and output are two-way.
(ii) from node:
(1) small and exquisite, frivolous from the structural design of node, be generally rectangular parallelepiped, size is generally 97mm*57mm*7mm.
(2) from node, adopt powered battery, power management module converts the electric energy of battery to the inner modules required power supply that works.While adopting 150mAh powered battery from node, be greater than 1 year serviceable life, average working current is less than 170uA.
(3) from the CPU of node, adopt the CC2530 of TI, identical with host node, realize compatible ZigBee wireless communication protocol.
(4) from node, comprise real-time timepiece chip, Temperature Humidity Sensor, acceleration transducer, can be identical or different with host node;
(5) from node, adopt tongue tube as illegally opening sensor, coordinate magnet to detect packing case and whether be opened.
(6) from the external interface of node, be ZigBee antennal interface.ZigBee antenna adopts the form of PCB antenna, and interface direction is that input and output are two-way.
(7) can receive and arrange by ZigBee the bound (being generally-10 ℃~60 ℃) of working frequency range (CH1 ~ CH16) from node, packet numbering (1 ~ 10), sensor type (use humiture, illegally open, acceleration transducer wherein which sensor), acquisition interval time, Temperature Humidity Sensor.
(8) can be according to from the node acquisition interval time, timing acquiring Temperature Humidity Sensor data, and sensing data is sent to CC2530 by ZigBee-network.Can read and illegally open and acceleration transducer event (tongue tube and magnet-look-at-me-CC2530) by the mode of interrupting, and in time sensing data be sent to telegon by ZigBee-network.
(9), if be provided with the bound of Temperature Humidity Sensor, timing acquiring Temperature Humidity Sensor data, if humiture transfinites, send CC2530 by sensing data by ZigBee-network in time.
(iii) communication protocol:
(1) master-slave radio sensing node supervisory system for the Cold Chain Logistics of the various embodiments described above, host node and meet Zigbee protocol standard from the communication between node, between main and subordinate node, can form Star Network by Zigbee protocol, between main and subordinate node, can realize bidirectional data communication, working signal can manual configuration, has good network operation function, self-healing and MANET function, exact time synchronization function (the main and subordinate node time difference < 5ms).Specifically comprise: from node application layer valid data, exist: 32~64 BYTE; Working channel configuration interface is provided; Propagation delay time≤6s; Network operation cycle≤60s; Single from node networking time<10s; The longest networking time<60s; Data packet loss<1%; From node data throughput of transmissions>27Kb/s(valid data).
(2) host node can be realized two-way Wireless Data Transmission by meeting the 2G communication module ,Yu data center of GPRS agreement.
(3) in main and subordinate node, can move embedded system, and leave interface and PC end application software and communicate.
(iv) software systems: comprise bottom software, configuration software and application software.
(1) bottom software is the software operating on main and subordinate node hardware.Bottom software on host node mainly complete modules initialization, gather the information of various sensors, the information of storage sensor, with from node networking, receive sensor information from node, storage from the sensor information of node, upload sensor information to functions such as servers; From the bottom software of node mainly complete modules initialization, gather various sensors information, with host node networking, upload sensor information to functions such as host nodes.
(2) configuration software:
1. host node can be set and from the mode of operation of node, comprise host node and divide other sampling interval time, the interval time of uploading etc. from node
The sensor type that 2. can configure host node and need respectively collection and upload from node.Generally from node, there is Temperature Humidity Sensor, acceleration transducer, illegally open sensor; Host node has Temperature Humidity Sensor, acceleration transducer, carbon dioxide sensor, GPS sensor, and reserved sensor interface.
3. can configure the air interface type of wireless sensing node, the air interface of host node comprises GPRS, WIFI and ZigBee, and the air interface of child node only has ZigBee.By software, can configure host node with ZigBee, GPRS or WIFI mode networking communication.
When 4. host node is worked with the networking of ZigBee mode, can be configured to network and the two kinds of different modes that do not network; IP address and port numbers that can configuration server when host node is worked with the networking of GPRS mode.
5. can configure from node device coding etc.
6. can in the mode of instruction, configure by host node the threshold value gathering from node sensor, and can be by the control that conducts interviews of PASSWORD or cryptographic algorithm;
7. can in the mode of ordering, configure the working frequency range from node by host node.
8. can to host node, send data by serial ports of computers, arrange and read work parameter, comprise:
A) working method of host node CC2530: telegon, router
When b) host node CC2530 is telegon, the mode of uploading of host node data: GPRS, Wi-Fi
When c) host node CC2530 is telegon, server ip address and port numbers
D) sensor type: humiture, acceleration, carbon dioxide, GPS
E) under low-power consumption mode, the master and slave node sensor acquisition interval time: 10 minutes ~ 60 minutes, the unit that goes forward one by one was 10 minutes
F), under low-power consumption mode, host node sends interval time: 1 hour ~ 6 hours, the unit that goes forward one by one was 1 hour
G) under normal mode, the master and slave node sensor acquisition interval time: 1 minute ~ 60 minutes, the unit that goes forward one by one was 1 minute
H), under normal mode, host node sends interval time: 1 minute ~ 120 minutes, the unit that goes forward one by one was 1 minute
I) working frequency range of host node CC2530: CH1 ~ CH16
9. can arrange and read the running parameter from node, comprise: sensor type (humiture, illegally open, acceleration transducer); The upper and lower limit of Temperature Humidity Sensor :-10 ℃ ~ 60 ℃.Working frequency range: CH1 ~ CH16; Packet numbering: 1 ~ 10.
10. can read the network structure of master and slave node: under every grade of route of route sum of series from number of nodes, numbering.
(3) application software can be shown to user sensor information, positional information of main and subordinate node etc., meets intelligent FF logistics system application demand, can carry out regarded as output controlling.
During concrete enforcement, master-slave radio sensing node supervisory system for the Cold Chain Logistics of above-described embodiment, can select following equipment:
⑴Zigbee:
Procotol: compatible ZigBee 2007;
Network size:
Star Network: single host node connexon node >=128;
Propagation delay time :≤6s;
The network operation cycle :≤60s;
Node networking time: < 10s;
The networking time: < 60s;
Data packet loss: < 1%;
Child node data transmission throughput: > 27Kb/s(valid data).
⑵GPRS:
Radio band: GSM900/1800 double frequency;
Wireless bandwidth: 25-50KB/s;
Communication interface: Transistor-Transistor Logic level serial line interface.
⑶WIFI:
Frequency of operation: 2.412-2.484GHz;
Baud rate: 1200-115200bps;
Communication interface: Transistor-Transistor Logic level serial line interface.
(4) sensor:
1. temperature sensor measurement scope :-40 ℃ ~ 125 ℃, measuring accuracy: ± 0.3 ℃.
Host node is used the SHT21 of Sensirion as Temperature Humidity Sensor, this characteristic sensor: each sensor is through calibration and test, I2C digital signal that can outputting standard form, low-power consumption, excellent long-time stability.
2. humidity sensor measurement scope: 0 ~ 100%RH, measuring accuracy: ± 2%RH.
3. carbon dioxide sensor measurement range: 0 ~ 2000ppm, measuring accuracy: ± 50 ppm.
Host node adopts the COZIR-A of Britain GSS as carbon dioxide sensor, and this is a super low-power consumption (3.5mW), high performance infrared carbon dioxide sensor, and measurement range is that 0-2000ppm, 0-5000ppm, 0-1% are optional.
4. acceleration transducer measurement range: ± 2g, measuring accuracy ± 10%.
Host node adopts the MMA8453Q of Freescale as acceleration transducer, and this is the capacitor type micro-mechanical accelerometer of a intelligent low-power consumption, three axles, 10 bit resolutions.Tri-kinds of optional ranges of have ± 2g/ ± 4g/ ± 8g of MMA8453Q.MMA8453Q can be configured to the working method of Event triggered interrupt output, can guarantee the low power operation when there is no trigger event like this.
5. GPS sensor localization precision: 2.5m CEP(Circular Error Probable: circular proable error).
The grand electric H7710E DTU(Data Terminal Unit of host node use) realize compatible GPRS wireless communication protocol.H7710E DTU is a wireless DDN (the Digital Data Network) data communication products based on GPRS/GSM network.The GPRS/GSM wireless network of H7710E product utilization operator, for terminal device and data service center (platform) erect a wireless communication link, can carry out the transmission of data based on this wireless communication link, realizes the seamless access with cloud communications platform.
Master-slave radio sensing node supervisory system for the Cold Chain Logistics of the various embodiments described above of the present invention, utilize Zigbee-technology simultaneously in conjunction with master-slave radio sensor-based system, the real-time monitoring of realization to information such as article humitures in Cold Chain Logistics transportation and dispensing link process, when exceeding standard or meet with while illegally opening, humiture implements to report to the police, and can change transportation, humiture in delivery process, geography information carry out record, the function such as realized that cold chain article status monitoring and security alarm, cold chain article overall process information are reviewed.
Compared with prior art, master-slave radio sensing node supervisory system for the Cold Chain Logistics of the various embodiments described above of the present invention, have that networking function is powerful, data reliability is high, monitoring accuracy is high, cost is low, volume is small and exquisite, be convenient to install, can be effectively stably to the environmental information of food in cold chain transportation process monitor in real time, collection and record, and can carry out the advantages such as radio remote Distance Transmission to the data that gather.
Finally it should be noted that: the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although the present invention is had been described in detail with reference to previous embodiment, for a person skilled in the art, its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.